{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/110576873","pull_request_review_id":31758828,"id":110576873,"diff_hunk":"@@ -41,7 +41,7 @@ protected MemoryConsumer(TaskMemoryManager taskMemoryManager, long pageSize, Mem\n   }\n \n   protected MemoryConsumer(TaskMemoryManager taskMemoryManager) {","path":"core/src/main/java/org/apache/spark/memory/MemoryConsumer.java","position":3,"original_position":3,"commit_id":"07497e887084ae136fc577dd99c2fd02d7720643","original_commit_id":"9d14d3337ccf3e2255dfc79959823b3cf6bf3c0a","user":{"login":"cloud-fan","id":3182036,"avatar_url":"https://avatars0.githubusercontent.com/u/3182036?v=3","gravatar_id":"","url":"https://api.github.com/users/cloud-fan","html_url":"https://github.com/cloud-fan","followers_url":"https://api.github.com/users/cloud-fan/followers","following_url":"https://api.github.com/users/cloud-fan/following{/other_user}","gists_url":"https://api.github.com/users/cloud-fan/gists{/gist_id}","starred_url":"https://api.github.com/users/cloud-fan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cloud-fan/subscriptions","organizations_url":"https://api.github.com/users/cloud-fan/orgs","repos_url":"https://api.github.com/users/cloud-fan/repos","events_url":"https://api.github.com/users/cloud-fan/events{/privacy}","received_events_url":"https://api.github.com/users/cloud-fan/received_events","type":"User","site_admin":false},"body":"yea, but this PR fixed it, so after this PR, the memory mode is always same with `TaskMemoryManager`'s memory mode, right?","created_at":"2017-04-10T05:41:55Z","updated_at":"2017-04-10T05:41:55Z","html_url":"https://github.com/apache/spark/pull/17436#discussion_r110576873","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/17436","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/110576873"},"html":{"href":"https://github.com/apache/spark/pull/17436#discussion_r110576873"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/17436"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/17436","id":112637833,"html_url":"https://github.com/apache/spark/pull/17436","diff_url":"https://github.com/apache/spark/pull/17436.diff","patch_url":"https://github.com/apache/spark/pull/17436.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/17436","number":17436,"state":"open","locked":false,"title":"[SPARK-20101][SQL] Use OffHeapColumnVector when \"spark.memory.offHeap.enabled\" is set to \"true\"","user":{"login":"kiszk","id":1315079,"avatar_url":"https://avatars1.githubusercontent.com/u/1315079?v=3","gravatar_id":"","url":"https://api.github.com/users/kiszk","html_url":"https://github.com/kiszk","followers_url":"https://api.github.com/users/kiszk/followers","following_url":"https://api.github.com/users/kiszk/following{/other_user}","gists_url":"https://api.github.com/users/kiszk/gists{/gist_id}","starred_url":"https://api.github.com/users/kiszk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kiszk/subscriptions","organizations_url":"https://api.github.com/users/kiszk/orgs","repos_url":"https://api.github.com/users/kiszk/repos","events_url":"https://api.github.com/users/kiszk/events{/privacy}","received_events_url":"https://api.github.com/users/kiszk/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\n\r\nThis PR enables to use ``OffHeapColumnVector`` when ``spark.memory.offHeap.enable`` is set to ``true``. While ``ColumnVector`` has two implementations ``OnHeapColumnVector`` and ``OffHeapColumnVector``, only ``OnHeapColumnVector`` is always used.\r\n\r\nThis PR implements the followings\r\n- Pass ``OFF_HEAP`` to ``ColumnarBatch.allocate()`` when ``spark.memory.offHeap.enable`` is set to ``true``\r\n- Free all of off-heap memory regions by ``OffHeapColumnVector.close()``\r\n- Ensure to call ``OffHeapColumnVector.close()``\r\n- Make corrections to correctly handle test cases when ``spark.memory.offHeap.enable`` is set to ``true``\r\n\r\n## How was this patch tested?\r\n\r\nUse existing 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